Check valve with valve seat



FIG. 1 is a first perspective view of a check valve with valve seatshowing my new design;

FIG. 2 is a second perspective view thereof,

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a cross-sectional view thereof taken along the line 9-9 inFIG. 5;

FIG. 10 is a cross-sectional view thereof taken along the line 10-10 inFIG. 3;

FIG. 11 is a cross-sectional view thereof taken along the line 11-11 inFIG. 3;

FIG. 12 is a cross-sectional view thereof taken along the line 12-12 inFIG. 3;

FIG. 13 is a cross-sectional view thereof taken along the line 13-13 inFIG. 3; and,

FIG. 14 is a cross-sectional view thereof taken along the line 14-14 inFIG. 3.

CLAIM The ornamental design for a check valve with valve seat, as shownand described.